Owned by Obed S. Borgen, it and its sister station WWDA AM 990 were sold to the Taylor Electric Company late in the year; the call letters were changed to WNNO-AM-FM before the FM signed on.

The station was sold to Voss Radio, Inc. in 1977 and continued to simulcast Top 40 hits with WNNO-AM, which had now changed frequency to AM 900.

Voss sold the station to Armada Broadcasting in 1985, and the format was changed back to simulcasting Top 40 hits.

In the late 1990s WNNO-AM-FM were purchased by Magnum Radio Group and studios were moved to Church Street in Wisconsin Dells.

The calls of WNNO AM were changed to WDLS, which is now a classic country station; concurrently, WNNO-FM became CHR under the name "Mix 106", also using programming from Jones Radio Networks (Now Dial Global).